TIME-BASED SYSTEM AND METHOD FOR DETERMINING SUSPENSION MEMBER ELONGATION

Abstract: a system and method for determining elongation of suspension members in an elevator system that includes an elevator car that is supported for movement within a hoistway by at least one suspension member and a counterweight that is coupled to the elevator car with the at least one suspension member. a first time is determined when the first interactive element detects a presence of the elevator car. a second time is determined when the second interactive element detects a presence of the counterweight. a speed and a direction of the elevator car are also determined. elongation of the at least one suspension member is then determined by comparing a time difference between the first time and the second time to an elongation threshold.

Inventor(s): Arthur Hsu

CPC Classification: B66B1/3492 (Details {, e.g. call counting devices, data transmission from car to control system, devices giving information to the control system})

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